Refrigerating apparatus



c. E. L. LIPMAN REFRIGERATING APPARATUS Filed April 8, 1953 Z5 3 n x.

A @ai 6' Jl'- Mv 12 l i l 2511197215712 Patented oei. 22, 1935 UNITED STATES 4PATEISIT OFFICE l 2,013,139 alarmasnA'rme APPARATUS 'Carl E. L. Lipman, Chicago, Ill., assigner to Lipman Patents Corporation, Chicago, Ill., a corporation of Delaware Appucpapp April s, 1933, serial No. 665.010

claims. (C1. ca -116) refrigerating apparatus comprising the compressor and condenser is located in a chamber within the cabinet above the food compartment, the refrigerating apparatus being mounted on an insulated wall which serves as a dividing partition between the food compartment and the machin'- ery compartment above it, the wall and fthe entire v'refrigerating apparatus being removable as a unit from the upper end of the cabinet. In these constructions, a considerable amount of the cabinet space is occupied by the apparatus comprising the high side of the refrigerating system, thereby correspondingly reducing the food storage space. Furthermore, adequate cooling of the compressor and condenser enclosed in the machinery compartment requires the employment of a fan in this compartment to circulate the cooling air around the compressor and condenser.

My present invention aims to overcome the objectionable characteristics of the refrigerating apparatus above mentioned by increasing the size of the food compartment space so that it extends practically to the top of the cabinet, and aii'ordsa maximum of storage space for the size of the cabinet.

My invention also aims to dispose the refrigerating apparatus in a most compact arrangel ment with the compressor above the food compartment and practically abovethe cabinet itself, and the condenser entirely outside the cabinet but below the top thereof and in proximity to one, preferably the rear, wall of the cabinet.

My invention also contemplates the elimination of the cooling fan, which is practically indispensable for the cooling of the compressor and the condenser when located in an enclosed machinery compartment, the condenser, in accordance with my invention, being cooled by a circulaable closure ofvinsulating material which carries the refrigerating apparatus so that the apparatus and closure are removable from the cabinet as a unit. The arrangement of the refrigerating apparatus is such that the evaporator is suspendedl from and beneath the closure in the food compartment, the compressor is seated in the upper surface of the closure, while the condenser and the motor compressor unit cooling coil are located at the back of the cabinet where they are supported by suitable supporting means secured to the upper face of the closure, and projectingrearwardly over the upper end of the rear wall of the cabinet.

The construction, operation and many of the inherent advantages of my invention will be readily appreciated from that embodiment'thereof,

selected for illustrative purposes, which is shown on the accompanying drawing and described in the following specication.

Fig. 1 is a plan viewV of an apparatus embodying my invention,

Fig. 2 is a fragmentary rear elevation, partially in section. of the apparatus shown in Fig. 1,

Fig. 3 isa sectional view on the line 3--3 ofv Fig. 1,

Fig. 4 isa view similar to Fig. 2, showing a modiied form of condenser.

Fig. 5 is a fragmentary plan view with certain parts broken away, illustrating the condenser shown in Fig. 4 and its normal rennen to a wall, 3

and

Fig. 6 is a fragmentary sectional view showing the mounting of the motor compressor unit.

Referring now to the drawing more in detail, reference character 6 indicates generally a cabinet comprising upright walls of suitable heat insulating material, a portion vof the front wall 'I and rear wall 8 being shown in Fig. 3, the walls together with the bottom (not shown) formin., a food storage compartment 9, occupying substantially the entire space of the cabinet, said compartment being open at its upper end and having the usual door ii through which access to the interior of the compartment is available in the usual manner in service. f.

The open upper end of the compartment is closed by a closure member I2, as best shown in Fig. 2, this closure being made of heat insulating material adapted to set down into the opening and form the top oi' the food compartment, suitable gaskets or other sealing means I3 being employed to effect an ,air tight seal between the closure and the surrounding cabinet walls.

The refrigerating apparatus is carried by and,

removable from the cabinet as a unit with this closure. The apparatus comprisesa motorcom pressor unit Il of any suitable construction, but preferably of the hermetically sealed time illusf trated in my pending application, Serial No.

' 535,638, led May 7, 1931, this unit being seated' in a recess I5 formed in the upper face of the closurev and having a depressed bottom i0 so that while the unit is heat insulated bythe closure from the'foodcompartment, it projects onlyl a limited distance above the upper face oi the closure, thereby reducing the height of the assembly to a minimum,

The condenser i6 of the apparatus, shown in Figs. 2 and 3 as a condensing coil of usual construction and in Figs. 4 and 5 as of corrugated thin wall sheet metal construction, is supported 'at the rear of the cabinet in a manner to be later described, and is connected with the compressor by a pipe line Il and with the iioatcontrol and receiver i8, also recessed in the upper face ot the closure, by a return pipe line I9.

` outside the cabinet and rigidly connect it with -the closure i2 so as to enable removal of the entire refrigerating apparatus as a unit with the closure from the cabinet, I provide supporting means in the form of one or more supporting members 26, two being here shownfor illustrative purposes. These members may be of channel iron or angle iron construction, each comprising a portion 2'| extending over the top of the closure I2 and securely fastened thereto by bolts or otherwise, these portions projecting laterally from the closureover the upper end of the rear wall 8 of the cabinet where .they are bent downwardly to form vertical legs upon and between which the condenser It is supported. In the form illustrated, the innei flanges 28 of the supported channels serve as the actualJ supporting means for the condenser coils.

To insure against the accumulation of excessive heat in the sealed motor compressor unit, I'employan oil cooling coil 28 also carried by the supporting members 21, preferably above the con# denser i6, this coil being connected by pipes 2i and 32 with the interior of the motor compressor unit where provision is made for circulating the oil through the compressor and around the motor to abstract excess'heat units generated thereby, the oil being then circulated through the cooling coil 29 by which these excess heat units are dissipated to atmosphere. The oilcirculating apparatus, which is not here disclosed in detail, may be of any suitable construction, preferably that disclosed in my pending application above referred to. The casing of the motor compressor unit is preferably covered by a heat insulating sheath or 'covering 2li fitted over the casing and having the peripheral ilange 20 thereof engaging the upper surface of the closure.

In Figs; 4 and 5, the oil cooling coil 29 is the same'as thatshown in- Fig. 2. The supporting members 26 in this instance are of angle rather than channel construction, and the coil 22 is carried -by angle members 33 secured to one flange of the angle supporting members 26. In these a condenser carried by said Isupporting means youtside of but in proximity to said cabinet wall,

` aoiaisc gures, however, the condenser I6, instead of being-of coilvconstruction, is composed of two closely spaced sheetmetalwalls 34 and 35 between which the refrigerant flows, the walls being preferably of corrugated formation to increase the 5 ,room as is customary, and illustrated in Fig. 5,

an air circulating flue between the room wail and l0 the rear vertical wall of the cabinet is provided through which air will circulate by convection to cool the condenser and the oil cooling coils. The corrugated shape of the condenser of Figs. 4 and 5 provides in effect a series of parallel flues, which l5 facilitate air circulation. Should the cabinet be Y located otherwise than against a room wall, a sheet of metal or other material may be attached to the rearwardly projecting flanges of the y supporting members 26 to provide a ilue which will 2O insure adequate cooling air circulation.

For appearance sake, a removable hood or cover 36 is disposed over the upper end of the cabinet to enclose and conceal from view the motor compressor unit, the supports 21 and the 25 pipe lines. The usual cold control switch 31 may be provided'to regulate the cabinet temperature.

It should be apparent from the foregoing that my invention provides a refrigerating apparatus in which practically the entire space oi the cabinet is available for food storage purposes, and that the entire refrigerating apparatus is carried by the top of the closure compartment for the storage compartment so that the closure and apparatus are removable from the cabinet as a unit for purposes of repair and replacement, and that food compartment having an opening at its upper end, a heat insulating closure for said opening, a refrigerating apparatus attached to and 50 removable irom the cabinet as a unit with said closure, said apparatus comprising a compressor -located in a recess in the upper face of the closure, an evaporator suspended in the food compartment beneath the closure and a condenser 65 Aat the rear of the cabinet, and supports carried 2. The combination of a cabinet providing a a0 food compartment having an opening at its upper end, a closure for said opening, supporting means secured to said closure and projecting over the upper end of one of the walls of said cabinet,

any evaporator suspended in said food compartment from the lower face of said closure, and

a compressor supported above the food compartment by and partially embedded in said closure, 70

said closure and the condenser, evaporator, comfood compartment open at its upper end, a removable closure for said compartment, said closure being formed of heat insulating material and provided in its upper surface with a recess. a motor and compressor located in said recess, an evaporator suspended beneath said closure in said food compartment, supporting means projecting from said closure over the upper end of one of said cabinet walls, a condenser supported in proximity to the outer face of said wall by said supporting means, and a .removable cover disposed over said cabinet.

4. The combination wlth a cabinet providing a food compartment open at its upper end. a removable closure for said opening, a plurality of supports secured to said closureand extending downwardly in spaced apart relation in proximity to one wail of said cabinet to form in conjunction with said cabinet wall and a room wall against which the cabinet is set an air circulating flue, and a refrigerating apparatus carried by said closure and removable as a unit therewith from the cabinet, said apparatus including a condenser disposed within said iiue formed by said supports between said cabinet.

5. The combination with a cabinet having a removable top, of a refrigerating apparatus removably associated with said cabinet, said apparatus including a condenser, and means extending longitudinally of the cabinet in spaced relation for supporting said condenser outside of and adjacent to the rear wall of said cabinet, said wall and the condenser supporting means in conjunction with a room wall against which the cabinet is set providing an air circulating ue around the condenser.

' CARL E. L. LIPMAN. 

